CN108832732B

CN108832732B - Charging equipment, terminal and wireless charging system

Info

Publication number: CN108832732B
Application number: CN201810552822.9A
Authority: CN
Inventors: 张文成
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2018-05-31
Filing date: 2018-05-31
Publication date: 2021-01-08
Anticipated expiration: 2038-05-31
Also published as: CN108832732A

Abstract

The embodiment of the invention provides a charging device, a terminal and a wireless charging system, which are applied to the technical field of communication and can solve the problem that a transmitting coil and a receiving coil cannot be aligned quickly and accurately. Wherein, the charging apparatus includes: the charging device comprises a transmitting end control module, a transmitting coil and at least one first transmitting end coil arranged on the periphery of the transmitting coil, wherein the charging device is used for charging the device to be charged through the transmitting coil; the transmitting terminal control module is used for inputting a first transmitting terminal direct current to each first transmitting terminal coil of the at least one first transmitting terminal coil, each first transmitting terminal coil is used for generating a first transmitting terminal magnetic field through the first transmitting terminal direct current, and the first transmitting terminal magnetic field is used for moving the device to be charged to a target charging position through magnetic field force when the device to be charged is charged.

Description

Charging equipment, terminal and wireless charging system

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to charging equipment, a terminal and a wireless charging system.

Background

Currently, Wireless charging technology (Wireless charging technology) is applied more and more widely in terminals such as smart phones. Specifically, after the charging device is powered on, the charging device generates an alternating current with a certain frequency, the alternating current is input into a transmitting coil of the charging device, and when the charging device charges a terminal to be charged, the alternating current in the transmitting coil generates a current in a receiving coil of the terminal through electromagnetic induction, so that the terminal is charged through the current. In order to ensure the efficiency of wireless charging and avoid waste of electric energy, it is generally required that the charging device is aligned with the terminal to be charged, i.e. the transmitting coil is aligned with the receiving coil, for example, the axis of the transmitting coil is aligned with the axis of the receiving coil.

In the prior art, a terminal may detect an electromotive force generated by a current in a receiving coil in a wireless charging process, and if the magnitude of the electromotive force is not within a preset range, the terminal may determine that a transmitting coil is not aligned with the receiving coil, thereby prompting a user to move the terminal to align the transmitting coil and the receiving coil. After the user moves the terminal, the terminal continues to detect the electromotive force generated by the current in the receiving coil, and if the magnitude of the electromotive force is still not within the preset range, the terminal repeats the above process until the electromotive force in the receiving coil is within the preset range.

There is a problem in that it is impossible to align the transmitting coil and the receiving coil quickly and accurately since the user may manually move the terminal to align the transmitting coil and the receiving coil several times under several prompts of the terminal in the related art.

Disclosure of Invention

The embodiment of the invention provides a charging device, a terminal and a wireless charging system, and aims to solve the problem that a transmitting coil and a receiving coil cannot be aligned quickly and accurately.

In order to solve the above technical problem, the embodiment of the present invention is implemented as follows:

in a first aspect, an embodiment of the present invention provides a charging device, where the charging device includes: the charging device comprises a transmitting end control module, a transmitting coil and at least one first transmitting end coil arranged on the periphery of the transmitting coil, wherein the charging device is used for charging the device to be charged through the transmitting coil; the transmitting terminal control module is used for inputting a first transmitting terminal direct current to each first transmitting terminal coil in at least one first transmitting terminal coil respectively, each first transmitting terminal coil generates a first transmitting terminal magnetic field through the first transmitting terminal direct current respectively, and the first transmitting terminal magnetic field is used for moving the equipment to be charged to a target charging position through magnetic field force when the equipment to be charged is charged.

In a second aspect, an embodiment of the present invention further provides a terminal, where the terminal includes: the terminal is used for realizing charging through interaction of the receiving coil and charging equipment; the receiving terminal control module is used for inputting a first receiving terminal direct current to each first receiving terminal coil in at least one first receiving terminal coil, each first receiving terminal coil generates a first receiving terminal magnetic field through the first receiving terminal direct current, and the first receiving terminal magnetic fields are used for moving the terminal to a target charging position through magnetic field force when the terminal is charged.

In a third aspect, an embodiment of the present invention further provides a wireless charging system, where the system includes: a charging device as in the first aspect and a terminal as in the second aspect, the charging device being for charging the terminal; under the condition that the charging equipment generates a first transmitting end magnetic field through first transmitting end direct current and the terminal generates a first receiving end magnetic field through first receiving end direct current, the terminal moves under the action of magnetic field force of the first transmitting end magnetic field and magnetic field force of the first receiving end magnetic field so as to move to a target charging position; the direction of the direct current of the first transmitting end is the same as that of the direct current of the first receiving end.

In the embodiment of the present invention, in a scenario where a device to be charged (e.g., a terminal) is placed near the charging device (e.g., above the charging device), each of at least one first transmitting end coil in the charging device may generate one first transmitting end magnetic field. Each first transmitting end magnetic field can interact with a magnetic field generated by the device to be charged, so that the device to be charged automatically moves to the target charging position under the action of the magnetic field force of the first transmitting end magnetic field. Therefore, the charging equipment can be quickly and accurately aligned with the equipment to be charged, namely, the transmitting coil in the charging equipment and the receiving coil of the equipment to be charged can be quickly and accurately aligned.

Drawings

Fig. 1 is a schematic diagram of an architecture of a possible android operating system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a charging device according to an embodiment of the present invention;

fig. 3 is a second schematic structural diagram of a charging apparatus according to an embodiment of the present invention;

fig. 4 is a third schematic structural diagram of a charging apparatus according to an embodiment of the present invention;

fig. 5 is a fourth schematic structural diagram of a charging apparatus according to an embodiment of the present invention;

fig. 6 is a fifth schematic structural diagram of a charging apparatus according to an embodiment of the present invention;

fig. 7 is a sixth schematic structural diagram of a charging apparatus according to an embodiment of the present invention;

fig. 8 is a seventh schematic structural diagram of a charging apparatus according to an embodiment of the present invention;

fig. 9 is an eighth schematic structural diagram of a charging apparatus according to an embodiment of the present invention;

fig. 10 is a ninth schematic structural diagram of a charging apparatus according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 12 is a second schematic structural diagram of a terminal according to a second embodiment of the present invention;

fig. 13 is a third schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 14 is a fourth schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 15 is a fifth schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 16 is a sixth schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 17 is a schematic area diagram of a charging device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that "/" in this context means "or", for example, A/B may mean A or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. "plurality" means two or more than two.

It should be noted that, in the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

The terms "first" and "second," and the like, in the description and in the claims of the present invention are used for distinguishing between different objects and not for describing a particular order of the objects. For example, the first transmitting end coil and the second transmitting end coil, etc. are used to distinguish different inputs, rather than to describe a specific order of the transmitting end coils.

In the charging device, the terminal and the wireless charging system provided in the embodiments of the present invention, the charging device is provided with at least one first transmitting end coil, the terminal (i.e., the device to be charged) is provided with at least one first receiving end coil, and when dc currents in the same direction are input to the at least one first transmitting end coil and the at least one first receiving end coil, the terminal may move under the action of magnetic field forces in which the two same dc currents respectively generate a magnetic field. In this way, the wireless charging system can be used for quickly and accurately aligning the charging device and the terminal, namely, quickly and accurately aligning the transmitting coil in the charging device and the receiving coil in the terminal.

It should be noted that, a wireless charging system provided by the embodiment of the present invention may include a charging device and a device to be charged (e.g., a terminal to be charged).

As shown in fig. 1, in an application scenario of the embodiment of the present invention, a wireless charging system provided in the embodiment of the present invention may include: a charging device 100 and a terminal 200. Specifically, the embodiment of the present invention may be applied to a scenario in which the terminal 200 (i.e., the device to be charged) is placed near the charging device 100, for example, the terminal 200 is placed above the charging device 100, that is, a scenario in which the device to be charged is placed in a wireless charging area.

Wherein the charging device 100 is used to charge the terminal 200. Specifically, the charging device 100 is configured to convert electric energy of a power grid into alternating current at a high frequency, and generate electromagnetic waves by the alternating current at the transmitting coil; the terminal 200 is configured to obtain a current by receiving the electromagnetic wave generated by the coil induction charging apparatus 100, and charge the terminal (e.g., a battery cell in the terminal) by the current.

In addition, a wireless communication link may be established between the charging device 100 and the terminal 200 based on a standard wireless charging communication protocol or a customized wireless charging communication protocol, and information may be transmitted to each other through the established wireless communication link. The standard wireless communication protocol may specifically be: the Qi standard, the Power Materials Alliance (PMA) standard, the Wireless charging Alliance (Alliance for Wireless Power, A4WP), Invisible Power Field (Invisible Power Field, innpofi) technology, magnetic resonance Wireless charging (Wi-Po), and the like.

Alternatively, the charging device 100 provided in the embodiment of the present invention may be a device having a base on which the terminal 200 is placed, or the charging device 100 may also be another charging device.

Optionally, the terminal 200 provided in the embodiment of the present invention may be a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a Personal Digital Assistant (PDA), a smart watch, a smart bracelet, or other types of terminal devices, and the embodiment of the present invention is not limited thereto. As an example, in the embodiment of the present invention, fig. 1 illustrates that the terminal 200 is a mobile phone.

The first embodiment,

An embodiment of the present application provides a charging apparatus, and as shown in fig. 2, the charging apparatus 100 includes: a transmitting terminal control module 101, a transmitting coil 102 and at least one first transmitting terminal coil 103 arranged at the periphery of the transmitting coil 102. Specifically, the charging device 100 is used to charge a device to be charged via the transmitting coil 102.

The transmitting terminal control module 101 is configured to input a first transmitting terminal direct current I1 to each first transmitting terminal coil 103 of the at least one first transmitting terminal coil 103, where each first transmitting terminal coil 103 is configured to generate a first transmitting terminal magnetic field through the first transmitting terminal direct current I1, and the first transmitting terminal magnetic field is configured to move the device to be charged to the target charging position through a magnetic field force when the device to be charged is charged.

In the embodiment of the present invention, the number of turns of the transmitting coil 102 and the width of each turn of the coil, as well as the shape of the transmitting coil 102, are not specifically limited, and may be set according to actual requirements. For example, the transmit coil 102 may be annular or rectangular (e.g., square) in shape.

Similarly, the number of turns of each first transmitting end coil 103 and the width of each turn of the coil, and the shape of each first transmitting end coil 103 are not particularly limited in the embodiments of the present invention, and may be set according to actual requirements. For example, each of the first transmitting-end coils 103 is rectangular (e.g., square) in shape.

It can be understood that the direction of the first transmitting end magnetic field generated by the first transmitting end coil 103 changes with the direction of the first transmitting end direct current I1 input in the first transmitting end coil 103. That is, the two poles of the first transmitting end magnetic field generated by the first transmitting end coil 103 change with the direction of the first transmitting end direct current I1 input in the first transmitting end coil 103.

In addition, the first transmit end magnetic field generated by the first transmit end coil 103 may interact with other magnetic fields in the vicinity of the first transmit end coil 103, such as with a magnetic field above the first transmit end coil 103. For example, in a scenario in which the device to be charged is placed above the charging device 100, the magnetic field generated by the device to be charged is a magnetic field above the first transmitting-end coil 103 in the charging device 100.

Specifically, when the magnetism of the magnetic field generated by the first transmitting end is different from that of the magnetic field generated by the device to be charged, the magnetic force of the magnetic field of the first transmitting end is an attractive force, and the device to be charged moves under the attractive action of the magnetic force of the magnetic field of the first transmitting end. In addition, when the magnetism between the magnetic field generated by the first transmitting end magnetic field and the magnetic field generated by the device to be charged is the same, the magnetic force of the first transmitting end magnetic field is repulsive force, and the device to be charged moves under the repulsive action of the magnetic force of the first transmitting end magnetic field.

Exemplarily, as shown in fig. 3, a schematic structural diagram of a charging device according to an embodiment of the present invention is provided. The charging device 100 shown in fig. 3 has a circular base, and the at least one first transmitting end coil 103 may be the first transmitting end coil 1031. Also, the shape of the transmitting coil 102 shown in fig. 3 is a ring shape, and the shape of the first transmitting end coil 1031 is a square shape.

The transmitting end control module 101 is specifically configured to input a first transmitting end direct current I1 to the first transmitting end coil 1031, where the first transmitting end direct current I1 is specifically configured to generate a first transmitting end magnetic field by the first transmitting end coil 1031, and a device to be charged (such as the terminal 200) moves under the action of a magnetic field force of the first transmitting end magnetic field.

It can be understood that the device to be charged provided by the embodiment of the present invention may include a receiving coil therein, which is used to interact with a transmitting coil in the charging device 100, so as to enable the charging device 100 to charge the device to be charged.

It is emphasized that, in order to ensure the efficiency of wireless charging, avoid the waste of electric energy, and improve the charging efficiency, it is generally required that the charging device 100 is aligned with the device to be charged, i.e. the transmitting coil 102 in the charging device 100 is required to be aligned with the receiving coil in the device to be charged, for example, the axis of the transmitting coil 102 is required to be aligned with the axis of the receiving coil. The target charging position is a position of the charging device 100 relative to the device to be charged when the charging device 100 is aligned with the device to be charged.

It should be noted that, in the charging device 100 provided by the embodiment of the present invention, in a scenario where the device to be charged is placed near the charging device 100 (e.g., above the charging device), each first transmitting-end coil 103 (e.g., the first transmitting-end coil 1031) in at least one first transmitting-end coil 103 in the charging device 100 may generate one first transmitting-end magnetic field. Each first transmitting end magnetic field can interact with a magnetic field generated by the device to be charged, so that the device to be charged automatically moves to the target charging position under the action of the magnetic field force of the first transmitting end magnetic field. In this way, a fast and accurate alignment of the charging device 100 with the device to be charged, i.e. a fast and accurate alignment of the transmitting coil 102 in the charging device 100 and the receiving coil in the device to be charged, can be achieved.

In a possible implementation manner, as shown in fig. 4, another schematic structural diagram of the charging device 100 according to an embodiment of the present invention is provided. The charging device 100 shown in fig. 4 may further include at least one second transmitting terminal coil 104 disposed at the periphery of the at least one first transmitting terminal coil 103.

The transmitting end control module 101 is further configured to input a second transmitting end direct current I2 to each second transmitting end coil 104 of the at least one second transmitting end coil 104, where each second transmitting end coil 104 is configured to generate a second transmitting end magnetic field by the second transmitting end direct current I2, and a direction of the second transmitting end direct current I2 is opposite to a direction of the first transmitting end direct current I1. For example, the direction of the first transmitting terminal dc current I1 is counterclockwise, and the direction of the second transmitting terminal dc current I2 is clockwise. Specifically, the second transmitting terminal magnetic field is used for moving the device to be charged to the target charging position through a magnetic field force when the device to be charged is charged.

Optionally, the at least one first transmitting end coil 103 and the at least one second transmitting end coil 104 are connected in series. At this time, the magnitude of the first transmitting terminal direct current I1 is the same as the magnitude of the second transmitting terminal direct current I2.

In the embodiment of the present invention, the number of turns of the second transmitting end coil 104 and the width of each turn of the second transmitting end coil 104, and the shape of the second transmitting end coil 104 are not specifically limited, and may be set according to actual requirements. For example, the second transmitting-end coil 104 is annular or square in shape.

The "the device to be charged moves under the action of the magnetic field force of the first transmitting end magnetic field" may include that the device to be charged moves under the action of the magnetic field force of the first transmitting end magnetic field and the magnetic field force of the second transmitting end magnetic field.

Similarly, the description of the second transmitting end magnetic field can refer to the related description of the first transmitting end magnetic field.

The direction of the second transmitting terminal direct current I2 is opposite to the direction of the first transmitting terminal direct current I1, so that the direction of the second transmitting terminal magnetic field is opposite to the direction of the first transmitting terminal magnetic field.

Specifically, since the direction of the second transmitting terminal direct current I2 is opposite to the direction of the first transmitting terminal direct current I1, when the magnetism of the first transmitting terminal magnetic field is different from that of the magnetic field generated by the device to be charged, the magnetism of the second transmitting terminal magnetic field is the same as that of the magnetic field generated by the device to be charged, that is, the magnetic force of the second transmitting terminal magnetic field is a repulsive force. Thus, the device to be charged can move under the repulsive action of the magnetic field force of the second transmitting end magnetic field and the attractive action of the magnetic field force of the first transmitting end magnetic field.

Exemplarily, referring to fig. 3, as shown in fig. 5, the charging device 100 according to the embodiment of the present invention may further include a second transmitting end coil 1041 disposed at the periphery of the first transmitting end coil 1031.

The transmitting end control module 101 is specifically configured to input a second transmitting end direct current I2 to the second transmitting end coil 1041, and the second transmitting end coil 1041 is configured to generate a second transmitting end magnetic field through the second transmitting end direct current I2.

Optionally, the first transmitting end coil 1031 and the second transmitting end coil 1041 are connected in series.

It should be noted that, in the charging device 100 provided in the embodiment of the present invention, in a scenario where a device to be charged is placed near the charging device 100, because at least one second transmitting end coil 104 included in the charging device 100 may generate a second transmitting end magnetic field, and each second transmitting end magnetic field may interact with a magnetic field generated by the device to be charged, the device to be charged is moved under the action of the magnetic field force of the first transmitting end magnetic field and the magnetic field force of the second transmitting end magnetic field, and therefore, fast and accurate alignment between the charging device 100 and the device to be charged may be further achieved.

In a possible implementation manner, in the charging device 100 provided in the embodiment of the present invention, the at least one first transmitting end coil 103 is at least two first transmitting end coils 1032, and the at least two first transmitting end coils 1032 are uniformly distributed on the periphery of the transmitting coil 102.

Illustratively, as shown in fig. 6, the at least two first transmitting end coils 1032 in the charging device 100 include a first transmitting end coil 1032a, a first transmitting end coil 1032b, a first transmitting end coil 1032c, and a first transmitting end coil 1032 d. Also, the four first transmitting end coils 1032 are uniformly distributed around the periphery of the transmitting coil 102.

Optionally, the first transmitting end coil 1032a, the first transmitting end coil 1032b, the first transmitting end coil 1032c, and the first transmitting end coil 1032d are distributed annularly or in a square (e.g., rectangular) shape around the transmitting coil 102. For example, the first transmitting end coil 1032a, the first transmitting end coil 1032b, the first transmitting end coil 1032c, and the first transmitting end coil 1032d shown in fig. 4 are positioned at four vertices of a square, that is, the four first transmitting end coils are distributed in a square.

Alternatively, fig. 6 shows that the first transmission-side coil 1032a, the first transmission-side coil 1032b, the first transmission-side coil 1032c, and the first transmission-side coil 1032d have the same structure. Specifically, the four first transmitting end coils are all annular in shape and are all the same in size. At this time, the first transmitting-end magnetic fields generated by the four first transmitting-end coils are all the same.

Optionally, the first transmitting end coil 1032a, the first transmitting end coil 1032b, the first transmitting end coil 1032c and the first transmitting end coil 1032d are connected in series.

Similarly, when the at least two first transmitting end magnetic fields 1032 are different from the magnetic field generated by the device to be charged in magnetism, the magnetic field forces of the at least two first transmitting end magnetic fields are attraction forces, and the device to be charged moves under the attraction effect of the magnetic field forces of the at least two first transmitting end magnetic fields. In addition, when the magnetism between the at least two first transmitting end magnetic fields is the same as that generated by the device to be charged, the magnetic field forces of the at least two first transmitting end magnetic fields are repulsive forces, and the device to be charged moves under the repulsive action of the magnetic field forces of the at least two first transmitting end magnetic fields.

It is understood that the periphery of the at least two first transmitting end coils 1032 can also be provided with the at least one second transmitting end coil 104 (such as the second transmitting end coil 1041). For example, the peripheries of the first transmitting side coil 1032a, the first transmitting side coil 1032b, the first transmitting side coil 1032c and the first transmitting side coil 1032d shown in fig. 4 may be further provided with the at least one second transmitting side coil 104.

It should be noted that, according to the charging device 100 provided in the embodiment of the present invention, since the at least two first transmitting end coils are uniformly distributed on the periphery of the transmitting coil 102, and the generated magnetic fields of the at least two first transmitting end coils are the same, the at least two first transmitting end coils can generate the magnetic field forces of the at least two first transmitting end magnetic fields that are uniformly distributed on the periphery of the transmitting coil 102, and the magnetic field forces of the at least two first transmitting end magnetic fields have a more specific effect on the charging device. For example, even if the device to be charged is offset to one side of the transmitting coil 102 of the charging device 100, the magnetic field forces of the plurality of magnetic fields generated by the charging device 100 may cause the device to be charged to be attracted to that side in a targeted manner. Thereby, the charging device 100 can be further quickly and accurately aligned with the device to be charged.

In a possible implementation manner, the charging device 100 provided in the embodiment of the present invention may further include a first transmitting-end isolation layer 105 disposed between the transmitting coil 102 and each first transmitting-end coil 103.

Among them, the first transmitting end isolation layer 105 may be such that magnetic fields between the transmitting coil 102 and each first transmitting end coil 103 do not interfere with each other.

Exemplarily, referring to fig. 3, fig. 7 shows another schematic structural diagram of the charging device provided in the embodiment of the present invention. The charging apparatus 100 shown in fig. 7 may further include a first transmitting terminal isolation layer 1051 disposed between the transmitting coil 102 and the first transmitting terminal coil 1031.

Specifically, the first transmitting end isolating layer 1051 may allow the magnetic fields between the transmitting coil 102 and the first transmitting end coil 1031 not to interfere with each other.

Exemplarily, in conjunction with fig. 6, fig. 8 shows another schematic structural diagram of the charging device provided in the embodiment of the present invention. The charging device 100 shown in fig. 8 may further include a first transmitting-side isolation layer 105a disposed between the transmitting coil 102 and the first transmitting-side coil 1032a, a first transmitting-side isolation layer 105b disposed between the transmitting coil 102 and the first transmitting-side coil 1032b, a first transmitting-side isolation layer 105c disposed between the transmitting coil 102 and the first transmitting-side coil 1032c, and a first transmitting-side isolation layer 105d disposed between the transmitting coil 102 and the first transmitting-side coil 1032 d.

Further, the charging device 100 provided by the embodiment of the present invention may further include a second transmitting-end isolation layer 106 disposed between each first transmitting-end coil 103 and each second transmitting-end coil 104.

Optionally, the first transmitting end isolation layer 105 and the second transmitting end isolation layer 106 are both made of a magnetic conductive material, for example, the magnetic conductive material provided in the embodiment of the present invention may be ferrite or nanocrystal.

Exemplarily, in conjunction with fig. 5 and fig. 7, fig. 9 shows another schematic structural diagram of the charging device provided in the embodiment of the present invention. The charging apparatus 100 shown in fig. 9 further includes a second transmitting end isolation layer 1061 disposed between the first transmitting end coil 1031 and the second transmitting end coil 1041.

It should be noted that, according to the charging device 100 provided in the embodiment of the present invention, since the first transmitting-end isolation layer 105 may be disposed between the transmitting coil 102 and each first transmitting-end coil 103, and the second transmitting-end isolation layer 106 may be disposed between each first transmitting-end coil 103 and each second transmitting-end coil 104, the magnetic fields of the transmitting coil 102, each first transmitting-end coil 103, and each second transmitting-end coil 104 in the charging device 100 do not interfere with each other. Thus, the charging device 100 is advantageously aligned with the device to be charged quickly and accurately.

In a possible implementation manner, in the charging device 100 provided in the embodiment of the present invention, the transmitting end control unit 101 is further configured to input a first transmitting end alternating current I3 to the transmitting coil 102, the transmitting coil 102 is configured to transmit a first electromagnetic wave through the first transmitting end alternating current I3, and the charging device 100 is specifically configured to charge a device to be charged through the first electromagnetic wave.

It is understood that the process of the transmitting-end control module 101 inputting current to the at least one first transmitting-end coil 103, the at least one second transmitting-end coil 104 and the transmitting coil 102 in the charging device 100 provided by the embodiment of the present invention may be implemented by each sub-module in the transmitting-end control unit 101.

Specifically, as shown in fig. 10, the transmitting end control module 101 provided for the embodiment of the present invention may include a power supply module 101a, a driving module 101b, a current conversion module 101c, and a processing unit 101 d.

The power module 101a may be used to connect to a power grid to provide power for the charging device 100.

Specifically, the power module 101a is specifically configured to be connected to a driving module 101b, the driving module 101b is sequentially connected in series to at least one first transmitting end coil 103 and at least one second transmitting end coil 104, and the driving module 101b is further connected to the processing unit 101 d.

Optionally, although not shown in fig. 10, the power module 101a may also be connected to the processing unit 101 d.

The processing unit 101d may control the driving module 101b to conduct, so that the current provided by the power module 101a is conducted to the at least one first transmitting end coil 103 and the at least one second transmitting end coil 104 through the driving module 101 b. That is, the transmitting-end control unit 101 inputs the first transmitting-end direct current I1 to the at least one first transmitting-end coil 103 and inputs the second transmitting-end direct current I2 to the at least one second transmitting-end coil 104.

In addition, the power module 101a is specifically configured to be connected to a current conversion module 101c, the current conversion module 101c is further connected to the transmitting coil 102, and the current conversion module 101c may also be connected to the processing unit 101 d.

The processing unit 101d may control the current converting module 101c to operate, so that the current provided by the power module 101a is conducted to the transmitting coil 102 through the current converting module 101 c. That is, the transmitting-side control unit 101 inputs the first transmitting-side alternating current I3 to the transmitting coil 102.

Optionally, the driving module 101b may include a voltage regulator, and a MOS transistor connected to the voltage regulator. The voltage regulator may be a low dropout regulator (LDO), and the MOS transistor is a metal-oxide-semiconductor (semiconductor) field effect transistor.

In addition, referring to fig. 10, the charging device 100 according to the embodiment of the present invention may further include an indicator light 107, and the indicator light 107 may be connected to the at least one first transmitting end coil 103 or the at least one second transmitting end coil 104.

Optionally, the current converting module 101c may include an inverter circuit for converting the dc current from the power module 101a into an ac current, such as the first transmitting end ac current I3.

Optionally, the processing Unit 101d may be a Micro Controller Unit (MCU).

When the inverter circuit in the current conversion module 101c starts to operate, the processing module 101d may receive a corresponding signal and then turn on the MOS transistor in the driving module 101 b. The MOS tube is used as a switch and works in a saturation region or a cut-off region.

It should be noted that, since the output of the voltage regulator in the driving module 101b is stable, and the indicator light 107 can be used as a stable load in the charging device 100, the first emitting end direct current I1 and the second emitting end direct current I2 output by the driving module 101b are made to be constant currents. In this way, the at least one first transmitting end coil 103 or the at least one second transmitting end coil 104, respectively, can be made to generate a constant magnetic field. Thus, the charging device 100 is advantageously aligned with the device to be charged quickly and accurately.

Example II,

An embodiment of the present invention provides a terminal, and referring to fig. 11, a terminal 200 includes: the terminal 200 comprises a receiving end control module 201, a receiving coil 202 and at least one first receiving end coil 203 arranged on the periphery of the receiving coil 202, wherein the terminal is charged through interaction of the receiving coil 202 and a charging device.

The receiving-end control module 201 is configured to input a first receiving-end direct current I4 to each first receiving-end coil 203 of the at least one first receiving-end coil 203, where each first receiving-end coil 203 generates a first receiving-end magnetic field through the first receiving-end direct current I4, and the first receiving-end magnetic field is used to move the terminal 200 to the target charging position through a magnetic field force when the terminal 200 is charged.

The target charging position of the terminal 200 is the position of the terminal 200 relative to the charging device when the terminal 200 is aligned with the charging device.

In the embodiment of the present invention, the number of turns of the receiving coil 202 and the width of each turn of the coil, as well as the shape of the receiving coil 202, are not specifically limited, and may be set according to actual requirements. For example, the receiving coil 202 is annular or rectangular in shape.

Similarly, the number of turns of each first receiving end coil 203 and the width of each turn of the coil, and the shape of each first receiving end coil 203 are not particularly limited in the embodiments of the present invention, and may be set according to actual requirements. For example, each of the first receiver coils 203 has a rectangular shape (e.g., a square shape).

It is understood that the direction of the first receiving-end magnetic field generated by the first receiving-end coil 203 changes with the direction of the first receiving-end direct current I4 input into the first receiving-end coil 203. That is, the two poles of the first receiving-end magnetic field generated by the first receiving-end coil 203 change with the direction of the first receiving-end dc current I4 input to the first receiving-end coil 203.

In addition, the first receiving-end magnetic field generated by the first receiving-end coil 203 may interact with other magnetic fields in the vicinity of the first receiving-end coil 203, such as a magnetic field below the first receiving-end coil 203. For example, in a scenario where the terminal 200 is placed under a charging device (such as the charging device 100), the magnetic field generated by the charging device is a magnetic field under the first receiving end coil 203 in the terminal 200.

Specifically, when the magnetism of the first receiving-end magnetic field generated by the terminal 200 is different from the magnetism of the magnetic field generated by the charging device, the magnetic force of the first receiving-end magnetic field is an attractive force, and the terminal 200 moves under the attractive action of the magnetic force of the first receiving-end magnetic field. In addition, when the magnetism of the first receiving-end magnetic field is the same as that of the magnetic field generated by the charging device, the magnetic force of the first receiving-end magnetic field is repulsive force, and the terminal 200 moves under the repulsive action of the magnetic force of the first receiving-end magnetic field.

Exemplarily, as shown in fig. 12, a schematic structural diagram of a terminal according to an embodiment of the present invention is provided. The terminal 200 shown in fig. 12 is a handset. The at least one first receiving end coil 203 may be a first receiving end coil 2031. The receiving coil 202 shown in fig. 11 has a ring shape, and the first receiving end coil 2031 has a square shape.

The receiving-end control module 201 is specifically configured to input a first receiving-end direct current I4 to the first receiving-end coil 2031, and the first receiving-end coil 2031 is configured to generate a first receiving-end magnetic field through the first receiving-end direct current I4, so that the terminal 200 can move under the action of the magnetic field force of the first receiving-end magnetic field to move to the target charging position.

It is understood that the charging device provided by the embodiment of the present invention may include a transmitting coil therein for interacting with a receiving coil in the terminal 200 to charge the terminal 200.

It is emphasized that, in order to ensure the efficiency of wireless charging and avoid waste of electric energy, it is generally required that the transmitting coil in the charging device is aligned with the receiving coil 202 in the terminal 200, for example, the axis of the transmitting coil is required to be aligned with the axis of the receiving coil 202.

It should be noted that, in the terminal 200 provided in the embodiment of the present invention, in a scenario where the terminal 200 is placed near the charging device (e.g., above the charging device), because each first receiving-end coil 203 (e.g., the first receiving-end coil 2031) in the at least one first receiving-end coil 203 in the terminal 200 can generate a first receiving-end magnetic field, each first receiving-end magnetic field can interact with the magnetic field generated by the charging device, so that the terminal 200 moves to the target charging position under the action of the magnetic field force of each first receiving-end magnetic field to align the terminal and the charging device. Since the terminal 200 automatically moves under the action of the magnetic field force of the magnetic field of the first receiving end without sending a prompt message to the user to remind the user to manually move the terminal 200, the terminal 200 can be quickly and accurately aligned with the charging device through the magnetic field force, that is, the transmitting coil in the charging device and the receiving coil in the terminal 200 are quickly and accurately aligned.

In a possible implementation manner, in the terminal 200 provided in the embodiment of the present invention, the at least one first receiving end coil 203 is at least two first receiving end coils 2032, and the at least two first receiving end coils 2032 are uniformly distributed on the periphery of the receiving coil 202.

Illustratively, as shown in fig. 13, the at least two first receiving end coils 2032 in the terminal 200 include a first receiving end coil 2032a, a first receiving end coil 2032b, a first receiving end coil 2032c, and a first receiving end coil 2032 d. Also, the four first receiving end coils 2032 are uniformly distributed around the periphery of the receiving coil 202.

Optionally, the first receiving end coil 2032a, the first receiving end coil 2032b, the first receiving end coil 2032c, and the first receiving end coil 2032d are distributed annularly or in a square shape around the periphery of the receiving coil 202. For example, the first receiving end coil 2032a, the first receiving end coil 2032b, the first receiving end coil 2032c, and the first receiving end coil 2032d shown in fig. 13 are distributed in a square shape around the receiving coil 202.

Optionally, the first receiving end coil 2032a, the first receiving end coil 2032b, the first receiving end coil 2032c, and the first receiving end coil 2032d shown in fig. 13 are all annular in shape, and the first receiving end coil 2032a, the first receiving end coil 2032b, the first receiving end coil 2032c, and the first receiving end coil 2032d are all the same in size. I.e. each first receiving end magnetic field is the same.

Optionally, the first receiving end coil 2032a, the first receiving end coil 2032b, the first receiving end coil 2032c, and the first receiving end coil 2032d are connected in series.

Similarly, when the magnetic fields generated by the at least two first receiving-end coils 2032 are different from the magnetic fields generated by the charging device in magnetism, the magnetic forces of the at least two first receiving-end magnetic fields are attraction forces, and the terminal 200 moves under the attraction effect of the magnetic forces of the at least two first receiving-end magnetic fields. In addition, when the magnetic fields generated by the at least two first receiving end magnetic fields are the same as the magnetic fields generated by the charging device, the magnetic field forces of the at least two first receiving end magnetic fields are repulsive forces, and the terminal 200 moves under the repulsive action of the magnetic field forces of the at least two first receiving end magnetic fields.

It should be noted that, in the terminal 200 provided in the embodiment of the present invention, because the at least two first receiving end coils are uniformly distributed on the periphery of the receiving coil 202, and the magnetic fields generated by the at least two first receiving end coils are the same, the at least two first receiving end coils can generate the magnetic field forces of the plurality of first receiving end magnetic fields uniformly distributed on the periphery of the receiving coil 202, and the magnetic field forces of the plurality of first receiving end magnetic fields have a more targeted effect on the terminal 200. For example, even if the charging device is offset with respect to a side of the receiving coil 202 of the terminal 200, the magnetic force generated by the terminal 200 can attract the terminal 200 to the side in a targeted manner. Thereby, the terminal 200 can be further quickly and accurately aligned with the charging device.

In a possible implementation manner, the terminal 200 provided in the embodiment of the present invention may further include a first receiving-end isolation layer 204 disposed between the receiving coil 202 and each first receiving-end coil 203, and a second receiving-end isolation layer 205 disposed on the periphery of at least one first receiving-end coil 203.

The first receiving-end isolation layer 204 may prevent magnetic fields between the receiving coil 202 and each of the first receiving-end coils 203 from interfering with each other. The second receiving-end isolation layer 205 may prevent the magnetic field generated by the at least one first receiving-end coil 203 from affecting other devices in the terminal 200.

Exemplarily, referring to fig. 12, fig. 14 is a schematic diagram illustrating another structure of the terminal according to the embodiment of the present invention. The terminal 200 shown in fig. 14 may further include a first receiving-end isolation layer 2041 disposed between the receiving coil 202 and the first receiving-end coil 2031. And, a second receiving end isolation layer 2051 is further disposed on the periphery of the first receiving end coil 2031.

Specifically, the first receiving-end isolation layer 2041 may prevent the magnetic fields between the receiving coil 202 and the first receiving-end coil 2031 from interfering with each other.

Exemplarily, referring to fig. 13, fig. 15 shows another schematic structural diagram of the terminal according to the embodiment of the present invention. The terminal 200 shown in fig. 15 may further include a first receiving-end isolation layer 204a disposed between the receiving coil 202 and the first receiving-end coil 2032a, a first receiving-end isolation layer 204b disposed between the receiving coil 202 and the first receiving-end coil 2032b, a first receiving-end isolation layer 204c disposed between the receiving coil 202 and the first receiving-end coil 2032c, and a first receiving-end isolation layer 204d disposed between the receiving coil 202 and the first receiving-end coil 2032 d. A second receiving-end isolation layer 2052 is further disposed around the first receiving-end coil 2032a, the first receiving-end coil 2032b, the first receiving-end coil 2032c, and the first receiving-end coil 2032 d.

Optionally, the first receiving-end isolation layer 204 and the second receiving-end isolation layer 205 are both made of a magnetic conductive material.

It should be noted that, in the terminal 200 provided in the embodiment of the present invention, since the first receiving-end isolation layer 204 may be disposed between the receiving coil 202 and each first receiving-end coil 203, and the second receiving-end isolation layer 205 may be disposed on the periphery of each first receiving-end coil, the magnetic fields of the receiving coil 202 and each first receiving-end coil 203 in the terminal 200 may not interfere with each other, and the magnetic fields may be prevented from affecting other devices in the terminal 200. Thus, it is advantageous for the terminal 200 to be quickly and accurately aligned with the charging device.

In a possible implementation manner, in the terminal 200 provided in the embodiment of the present invention, the receiving-end control unit 101 is further configured to control the first receiving-end alternating current I5 to charge the terminal 200 after the electromagnetic wave transmitted by the receiving coil 202 by the inductive charging device obtains the first receiving-end alternating current I5.

It can be understood that the receiving-end control module 201 in the terminal 200 provided in the embodiment of the present invention controls the first receiving-end alternating current I5 to charge the terminal 200, and may be implemented by each sub-module in the receiving-end control module 201.

Specifically, as shown in fig. 16, the receiving-end control module 201 provided for the embodiment of the present invention may include a driving module 201a, a current converting module 201b, and a processing unit 201 c.

The driving module 201a is used for connecting at least one first receiving end coil 203 and is connected with the processing unit 201 c. The current conversion module 201b is also used to connect the receiving coil 202, and the processing unit 201 c.

After the receiving coil 202 induces the electromagnetic waves sent by the charging device to obtain the first receiving-end alternating current I5, the first receiving-end alternating current I5 may enable the current converting module 201b to start operating, and the processing unit 201c may receive a corresponding signal, and then enable the current to be conducted to the at least one first receiving-end coil 203 through the driving module 201 a. Namely, the receiving-end control module 201 inputs the first receiving-end direct current I4 to the at least one first receiving-end coil 203.

Optionally, although not shown in fig. 16, a battery module (e.g., a battery cell) for storing electric energy may be further included in the terminal 200, and the battery module may be connected to the current conversion module 201 b. The processing unit 201c may conduct the current obtained by the current converting module 201b to the battery module, i.e. to realize the first receiving-end alternating current I5 to charge the terminal 200.

Optionally, the driving module 201a may include a voltage regulator, and a MOS transistor connected to the voltage regulator.

In addition, referring to fig. 16, the charging device 200 according to the embodiment of the present invention may further include an indicator 206, and the indicator 206 may be connected to the at least one first receiving end coil 203.

Optionally, the current converting module 201b may include a rectifying circuit for converting the ac current from the receiving coil 202 into a dc current, such as the first receiving end ac current I5. For example, the rectifier circuit may be a half-wave rectifier circuit, a full-wave rectifier circuit, a bridge rectifier circuit, or the like.

Optionally, the processing unit 201c may be an MCU.

When the rectifying circuit in the current conversion module 201b starts to operate, the processing unit 201c may receive a corresponding signal, and then turn on the MOS transistor in the driving module 201 a. The MOS tube is used as a switch and works in a saturation region or a cut-off region.

It should be noted that, since the output of the voltage regulator in the driving module 201a is stable, the first receiving end direct current I4 output by the driving module 201a is a constant current. In this manner, the at least one first receiving end coil 203 may be caused to generate a constant magnetic field, facilitating rapid and accurate alignment of the terminal 200 with the charging device.

Example III,

In combination with the charging device 100 and the terminal 200 provided in the above embodiments, the charging device 100 in the wireless charging system provided in the embodiment of the present invention may be used to charge the terminal 200.

Wherein, in a case where the charging apparatus 100 generates the first transmitting-side magnetic field by the first transmitting-side direct current I1 and the terminal 200 generates the first receiving-side magnetic field by the first receiving-side direct current I4, the terminal 200 moves under the magnetic force of the first transmitting-side magnetic field and the magnetic force of the first receiving-side magnetic field to move to the target charging position; the direction of the first transmitting terminal direct current I1 is the same as the direction of the first receiving terminal direct current I4.

Optionally, the magnitude of the first transmitting-end dc current I1 is equal to the magnitude of the first receiving-end dc current I4.

Since the first transmitting-side direct current I1 and the first receiving-side direct current I4 have the same direction, the magnetic force of the first receiving-side magnetic field generated by the terminal 200 is different from the magnetic force of the first transmitting-side magnetic field generated by the charging device 100, so that the magnetic forces of the first receiving-side magnetic field and the first transmitting-side magnetic field are mutually attractive. In this manner, the terminal 200 moves under the attraction of the magnetic field force of the first receiving-end magnetic field, i.e., the mutual attraction between the charging device 100 and the terminal 200, to align the charging device 100 and the terminal 200.

It is emphasized that, in order to ensure the efficiency of wireless charging and avoid waste of electric energy, it is generally required that the transmitting coil 102 in the charging device 100 is aligned with the receiving coil 202 in the terminal 200, for example, the axis of the transmitting coil 102 is required to be aligned with the axis of the receiving coil 202.

The target charging position is a position of the terminal 200 relative to the charging device 100 when the charging device 100 is aligned with the terminal 200.

It is understood that the at least one first transmitting end coil 103, the at least one second transmitting end coil 104 and the at least one first receiving end coil 203 provided by the embodiment of the present invention are all alignment coils.

It is emphasized that the embodiment of the present invention provides the same positional relationship between the at least one first transmitting-side coil 103 and the transmitting coil 102 in the charging apparatus 100 as the positional relationship between the at least one first receiving-side coil 203 and the receiving coil 202 in the terminal 200. Thus, in the case where the at least one first transmitting side coil 103 may be accurately aligned with the at least one first receiving side coil 203 in the terminal 200, the "charging device 100 is accurately aligned with the terminal 200" indicates that the transmitting coil 102 in the charging device 100 is accurately aligned with the receiving coil 202 in the terminal 200.

In a possible implementation manner, in the wireless charging system provided in the embodiment of the present invention, the number of the at least one first transmitting end coil 103 is equal to the number of the at least one first receiving end coil 203, and a structure of any one first transmitting end coil 103 is the same as a structure of any one first receiving end coil 203.

Specifically, in the case where the at least one first transmitting end coil 103 in the charging apparatus 100 is at least two first transmitting end coils 1032 and the at least one first receiving end coil 203 in the terminal 200 is at least two first receiving end coils 2032, the number of the at least two first transmitting end coils 1032 and the number of the at least two first receiving end coils 2032 are equal.

Wherein the structure of a coil includes the size and shape of the coil.

In addition, since the size and shape of one first transmitting end coil 103 are the same as those of one first receiving end coil 203, during the alignment of the charging device 100 with the terminal 200, at least one first transmitting end coil 103 in the charging device 100 may be accurately aligned with at least one first receiving end coil 203 in the terminal 200, that is, the charging device 100 is accurately aligned with the terminal 200.

It should be noted that, in the wireless charging system provided in the embodiment of the present invention, in a scenario where the terminal 200 is placed near the charging device 100 (e.g., above the charging device 100), at least one first transmitting-end coil 103 in the charging device 100 may generate a first transmitting-end magnetic field, and at least one first receiving-end coil 203 in the terminal 200 may generate a first receiving-end magnetic field, so that the terminal 200 may automatically move under the attraction of the first transmitting-end magnetic field and the first receiving-end magnetic field, without requiring a user to manually move the device to be charged, and therefore, fast and accurate alignment between the charging device 100 and the terminal 200, that is, fast and accurate alignment between the transmitting coil 102 and the receiving coil 202, may be achieved.

In one possible implementation, the charging device 100 is further configured to generate a second transmitting-end magnetic field by the second transmitting-end direct current I2; wherein, the terminal 200 moves under the magnetic force of the first transmitting end magnetic field and the magnetic force of the first receiving end magnetic field, including: the terminal 200 moves under the magnetic force of the first transmitting end magnetic field, the magnetic force of the first receiving end magnetic field, and the magnetic force of the second transmitting end magnetic field, and the direction of the second transmitting end direct current I2 is opposite to the direction of the first transmitting end direct current I1.

Specifically, with reference to fig. 4 or fig. 5, since the direction of the second transmitting-side dc current I2 is opposite to the direction of the first transmitting-side dc current I1, when the magnetism of the first transmitting-side magnetic field is different from that of the first receiving-side magnetic field generated by the terminal 200, the magnetism of the second transmitting-side magnetic field is the same as that of the first receiving-side magnetic field generated by the terminal 200, that is, the magnetic force of the second transmitting-side magnetic field and the magnetic force of the first receiving-side magnetic field are mutually repulsive forces. Thus, the terminal 200 may move under the repulsive action of the magnetic field force of the second transmitting terminal magnetic field and the attractive action of the magnetic field force of the first transmitting terminal magnetic field in the charging apparatus 100.

It should be noted that, in a scenario where the terminal 200 is placed near the charging device 100 (e.g., above a device to be charged), because at least one second transmitting end coil 104 included in the charging device 100 may generate second transmitting end magnetic fields, and each second transmitting end magnetic field may interact with the first receiving end magnetic field generated by the terminal 200, the terminal 200 may move under the action of the magnetic field force of the first transmitting end magnetic field and the magnetic field force of the second transmitting end magnetic field, and therefore, the charging device 100 and the terminal 200 may be aligned further quickly and accurately, that is, the transmitting coil 102 and the receiving coil 202 may be aligned further quickly and accurately.

In a possible implementation manner, in the wireless charging system provided in the embodiment of the present invention, the moving of the terminal 200 under the action of the magnetic field force of the first transmitting end magnetic field, the magnetic field force of the first receiving end magnetic field, and the magnetic field force of the second transmitting end magnetic field includes: under the condition that the terminal 200 is in the first preset region, the terminal 200 moves under the action of an attractive force between the magnetic field force of the first transmitting end magnetic field and the magnetic field force of the first receiving end magnetic field; in a case where the terminal 200 is in the second preset region, the terminal 200 moves under the action of an attractive force between the magnetic force of the first transmitting end magnetic field and the magnetic force of the first receiving end magnetic field, and a repulsive force between the magnetic force of the second transmitting end magnetic field and the magnetic force of the first receiving end magnetic field; the third preset area is arranged on the periphery of the second preset area.

For example, in combination with the wireless charging system shown in fig. 1 and the charging device 100 shown in fig. 3, as the charging device 100 shown in fig. 17, the area inside the dashed line M may be the first preset area, and the area outside the dashed line M and inside the dashed line N may be the second preset area.

It is understood that in the case where the positional deviation between the terminal 200 and the charging apparatus 100 is small, the terminal 200 may be in the first preset area, that is, at least one first receiving end coil 203 in the terminal 200 is in the first preset area. At this time, the terminal 200 moves by an attractive force between the magnetic force of the first transmitting-side magnetic field and the magnetic force of the first receiving-side magnetic field to align the charging apparatus 100 and the terminal 200.

In the case where the positional deviation between the terminal 200 and the charging apparatus 100 is large, the terminal 200 may be in the second preset region, that is, at least one first receiving-side coil 203 in the terminal 200 is in the first preset region. At this time, the terminal 200 moves under the attractive force between the magnetic force of the first transmitting-side magnetic field and the magnetic force of the first receiving-side magnetic field, and the repulsive force between the magnetic force of the second transmitting-side magnetic field and the magnetic force of the first receiving-side magnetic field, to align the charging apparatus 100 and the terminal 200.

Further, in the case where the positional deviation between the terminal 200 and the charging apparatus 100 is large, the terminal 200 may be located in an area outside the second preset area, for example, an area outside the broken line N shown in fig. 17. At this time, the terminal 200 moves by repulsive force between the magnetic force of the second transmitting-side magnetic field and the magnetic force of the first receiving-side magnetic field. Specifically, the terminal 200 may move out of the area where the charging device 100 is located, i.e., the charging device 100 stops charging the terminal 200. The terminal 200 may also send a prompt message to prompt the user that the terminal 200 has stopped charging.

It should be noted that, in the wireless charging system provided in the embodiment of the present invention, in the process of charging the terminal 200 by the charging device 100, the terminal 200 may be moved by using different magnetic field forces through the area where the terminal 200 is located, so as to align the charging device 100 and the terminal 200. In addition, the wireless charging system may also push the terminal 200 away from the charging apparatus 100 by a magnetic force in a case where the terminal 200 does not need to be charged. Accordingly, flexibility of the charging process of the terminal 200 by the charging device 100 is improved, and waste of electric energy can be avoided.

In a possible implementation manner, in the wireless charging system provided in the embodiment of the present invention, a first transmitting-end isolation layer 105 is disposed between the transmitting coil 102 and each first transmitting-end coil 103, and a second transmitting-end isolation layer 106 is disposed between each first transmitting-end coil 103 and each second transmitting-end coil 104; a first receiving end isolation layer 204 is arranged between the receiving coil 202 and each first receiving end coil 203, and a second receiving end isolation layer 205 is arranged on the periphery of at least one first receiving end coil 203.

It is understood that the first and second transmission-side isolation layers 105 and 106 are such that the magnetic fields of the respective coils in the charging device 100 do not interfere with each other; the first receiving-end isolation layer 204 and the second receiving-end isolation layer 205 may not interfere with each other between magnetic fields of the respective coils in the terminal 200, and the magnetic fields generated by the respective coils in the terminal 200 may not affect other devices in the terminal 200. Thus, the terminal 200 is facilitated to be quickly and accurately aligned with the charging device, i.e., the transmitting coil 102 and the receiving coil 202 are facilitated to be quickly and accurately aligned. Furthermore, the efficiency of wireless charging of the wireless charging system is improved.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A charging device, comprising:

the charging device comprises a transmitting end control module, a transmitting coil and at least one first transmitting end coil arranged on the periphery of the transmitting coil, wherein the charging device is used for charging a device to be charged through the transmitting coil;

the transmitting terminal control module is configured to input a first transmitting terminal direct current to each first transmitting terminal coil of the at least one first transmitting terminal coil, where each first transmitting terminal coil generates a first transmitting terminal magnetic field through the first transmitting terminal direct current, each first transmitting terminal magnetic field interacts with a magnetic field generated by the device to be charged, and the device to be charged is moved to a target charging position through magnetic field force matching corresponding to each second transmitting terminal magnetic field when the device to be charged is charged;

the charging apparatus further includes: at least one second transmitting end coil arranged at the periphery of the at least one first transmitting end coil;

the transmitting end control module is further configured to input a second transmitting end direct current to each second transmitting end coil of the at least one second transmitting end coil, where each second transmitting end coil generates a second transmitting end magnetic field through the second transmitting end direct current, and a direction of the second transmitting end direct current is opposite to a direction of the first transmitting end direct current; the second transmitting terminal magnetic field is used for moving the device to be charged to the target charging position through matching with the magnetic field force corresponding to each first transmitting terminal magnetic field when the device to be charged is charged.

2. The charging apparatus according to claim 1, further comprising:

a first transmitting end isolation layer disposed between the transmitting coil and each of the first transmitting end coils, and a second transmitting end isolation layer disposed between each of the first transmitting end coils and each of the second transmitting end coils.

3. The charging device of claim 2, wherein the first and second transmitting end isolation layers are each made of a magnetically permeable material.

4. A terminal for use with a charging device according to any one of claims 1 to 3, the terminal comprising:

the terminal comprises a receiving end control module, a receiving coil and at least one first receiving end coil arranged on the periphery of the receiving coil, wherein the terminal realizes charging through the interaction of the receiving coil and charging equipment;

the receiving end control module is configured to input a first receiving end direct current to each of the at least one first receiving end coil, where each first receiving end coil generates a first receiving end magnetic field through the first receiving end direct current, and the first receiving end magnetic field is configured to move the terminal to a target charging position through cooperation of a magnetic field force corresponding to each first transmitting end magnetic field and a magnetic field force corresponding to each second transmitting end magnetic field in the charging device when the terminal is charged.

5. The terminal of claim 4, further comprising:

a first receiving end isolation layer disposed between the receiving coil and each of the first receiving end coils, and a second receiving end isolation layer disposed at a periphery of the at least one first receiving end coil.

6. A terminal as claimed in claim 5, wherein the first and second receiving side isolation layers are each made of a magnetically permeable material.

7. A wireless charging system, comprising: the charging device of any one of claims 1 to 3 and the terminal of any one of claims 4 to 6, the charging device being for charging the terminal;

under the condition that the charging equipment generates a first transmitting end magnetic field through a first transmitting end direct current and the terminal generates a first receiving end magnetic field through a first receiving end direct current, the terminal moves under the action of the magnetic force of the first transmitting end magnetic field and the magnetic force of the first receiving end magnetic field so as to move to a target charging position; the direction of the direct current of the first transmitting end is the same as that of the direct current of the first receiving end.

8. The system of claim 7, wherein the charging device is further configured to generate a second transmitter magnetic field via a second transmitter direct current;

the terminal moves under the action of the magnetic field force of the first transmitting end magnetic field and the magnetic field force of the first receiving end magnetic field, and the method comprises the following steps:

the terminal moves under the action of the magnetic field force of the magnetic field of the first transmitting end, the magnetic field force of the magnetic field of the first receiving end and the magnetic field force of the magnetic field of the second transmitting end, and the direction of the direct current of the second transmitting end is opposite to that of the direct current of the first transmitting end.

9. The system of claim 8, wherein:

the terminal moves under the action of the magnetic field force of the first transmitting end magnetic field, the magnetic field force of the first receiving end magnetic field and the magnetic field force of the second transmitting end magnetic field, and the method comprises the following steps:

under the condition that the terminal is located in a first preset area, the terminal moves under the action of attractive force between the magnetic field force of the first transmitting end magnetic field and the magnetic field force of the first receiving end magnetic field;

under the condition that the terminal is located in a second preset area, the terminal moves under the action of attractive force between the magnetic force of the magnetic field of the first transmitting end and the magnetic force of the magnetic field of the first receiving end and repulsive force between the magnetic force of the magnetic field of the second transmitting end and the magnetic force of the magnetic field of the first receiving end;

the second preset area is arranged on the periphery of the first preset area.

10. The system according to any one of claims 7 to 9,

the number of the at least one first transmitting end coil is equal to that of the at least one first receiving end coil, and the structure of any one first transmitting end coil is the same as that of any one first receiving end coil.

11. The system of claim 10,

a first transmitting end isolation layer is arranged between each transmitting coil and each first transmitting end coil, and a second transmitting end isolation layer is arranged between each first transmitting end coil and a peripheral second transmitting end coil;

a first receiving end isolation layer is arranged between the receiving coil and each first receiving end coil, and a second receiving end isolation layer is arranged on the periphery of at least one first receiving end coil.